Question

12) Find the complete integral of the PDE p²+q²=1

Answer 1

This PDE is of Clariut's type. That is, it's of the form $z=px+qy+f(p, q)$.

To get the complete integral of this kind of PDE, we replace $p, q$ with $a, b$ respectively.

Hence the complete integral of the PDE above is

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